搜索结果: 1-14 共查到“海洋科学 Fe”相关记录14条 . 查询时间(0.151 秒)
中国科学院海洋研究所在现代海底热液硫化物矿床的Fe-S同位素研究方面取得新进展（图）
海底 热液 硫化物矿床 Fe-S同位素
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2020/10/15
近日，Science Bulletin报道了中科院海洋所深海研究中心孙卫东研究员课题组与中国海洋大学翟世奎教授课题组关于南大西洋中脊德音1号热液区硫化物烟囱体Fe-S同位素的研究成果。该研究发现热液黄铁矿的铁同位素与硫同位素具有正相关关系，对于研究热液成矿过程具有重要的意义。
Quantifying the Impact of Atmospheric Deposition on the Biogeochemistry of Fe and Al in the Upper Ocean:A Decade of Collaboration with the US CLIVAR-CO2 Repeat Hydrography Program
Atmospheric Deposition Biogeochemistry of Fe Al in the Upper Ocean Collaboration CLIVAR-CO2 Repeat Hydrography Program
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2015/7/17
The aerosol deposition of continental material and its partial dissolution in the surface ocean exerts an important control on the distribution of iron and other potentially limiting trace metal (TM) ...
Interactions between changing pCO2, N2 fixation, and Fe limitation in the marine unicellular cyanobacterium Crocosphaera
Interactions between changing pCO2 N2 fixation, Fe limitation in the marine unicellular cyanobacterium Crocosphaera
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2014/4/21
We examined the physiological responses of steady-state iron (Fe)-replete and Fe-limited cultures of the biogeochemically critical marine unicellular diazotrophic cyanobacterium Crocosphaera at glacia...
The effects of Cu and Fe availability on the growth and Cu:C ratios of marine diatoms
The effects of Cu and Fe availability on the growth and Cu:C ratios of marine diatoms
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2014/4/21
We investigated the effects of copper (Cu) and iron (Fe) availability on the growth rates, cellular Cu content, and steady-state Cu uptake rates of eight species of centric diatoms (coastal and oceani...
Rainwater as a source of Fe(II)-stabilizing ligands to seawater
Rainwater Fe stabilizing ligands seawater
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2014/4/18
Rainwater hydrophobic extractable dissolved organic matter (EDOM) contains ligand(s) that completely prevent Fe(II) oxidation for at least 4 h after rain is mixed with seawater.The EDOM Fe(II) complex...
The effects of Cu and Fe availability on the growth and Cu : C ratios of marinediatoms
Cu and Fe availability the growth Cu : C ratios marinediatoms
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2014/4/18
We investigated the effects of copper (Cu) and iron (Fe) availability on the growth rates, cellular Cu content,and steady-state Cu uptake rates of eight species of centric diatoms (coastal and oceanic...
The role of unchelated Fe in the iron nutrition of phytoplankton
The role of unchelated Fe the iron nutrition phytoplankton
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2014/4/18
The important question of iron bioavailability in the sea has become complicated by the discovery that marine phytoplankton can take up Fe bound in very stable chelates via reductive processes, and so...
海洋环境Fe同位素地球化学研究进展
Fe同位素 分馏系数 海洋环境 研究进展
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2007/8/6
Fe是海洋“生物泵”中限制浮游生物生长和控制海洋初级生产力的主要因素之一，也可间接影响大气中CO2含量，反馈于全球的气候变化。近年来基于多接收电感耦合等离子体质谱仪(MCICPMS)分析方法的改进及测试精度的提高，应用Fe同位素组成、变化及其分馏机制，为研究海水中Fe的主要来源以及示踪海洋环境中Fe的循环过程等，提供了一个有效地球化学指标，也对示踪地球不同演化阶段的海洋沉积环境变化具有指...
Nitrogen-fixation strategies and Fe requirements in cyanobacteria
Nitrogen-fixation strategies Fe requirements
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2014/4/22
Diazotrophic (nitrogen-fixing) cyanobacteria are important contributors of new nitrogen to oligotrophic
environments and greatly influence oceanic productivity. We investigated how iron availability ...
The role of soluble Fe(III) in the cycling of iron and sulfur in coastal marine sediments
The role of soluble Fe(III) cycling of iron sulfur in coastal marine sediments
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2014/5/9
In marine sediments, Fe(III) is found predominantly as a solid. Recently, however, soluble species of Fe3+ complexed by natural organic ligands have been detected in coastal marine sediments with volt...
Photochemical reactivity of siderophores produced by marine heterotrophic bacteria and cyanobacteria, based on characteristic Fe(III) binding groups
Photochemical reactivity siderophores produced marine heterotrophic bacteria cyanobacteria Fe(III) binding groups
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2014/5/20
Siderophores, high-affinity Fe(III) ligands produced by microorganisms to facilitate iron acquisition, might contribute significantly to dissolved Fe(III) complexation in ocean surface waters. In prev...
Kinetics of microbial Fe(III) oxide reduction in freshwater wetland sediments
Kinetics of microbial Fe(III) oxide reduction freshwater wetland sediments
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2014/5/26
The kinetics of microbial amorphous Fe(III) oxide reduction was investigated in sediments from a freshwater wetland in north central Alabama, USA. Fe(III) oxide concentrations decreased exponentially ...
The effect of Fe and Cu on growth and domoic acid production by Pseudo-nitzschia multiseries and Pseudo-nitzschia australis
The effect of Fe and Cu on growth domoic acid production Pseudo-nitzschia multiseries Pseudo-nitzschia australis
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2014/5/26
Toxigenic pennate diatoms of the genus Pseudo-nitzschia produce domoic acid (DA), the neurotoxin linked to amnesic shellfish poisoning. We investigated how Fe and Cu affect growth and DA production by...
Effects of photosynthesis on the accumulation of Mn and Fe by Phaeocystis colonies
photosynthesis Phaeocystis colonies
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2014/6/9
The significance of Mn and Fe accumulation by Phaeocystis colonies and its control by photosynthesis were
investigated by performing incubation assays with radiotracers (
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Mn,
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Fe and
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